Free calculators

Every calculator here opens ready to use, with a real example filled in. Nothing to install, no sign-up. Your numbers stay on your device.

• MoneyLoans, savings, budgets and everyday sums.
• Pay and taxesPaychecks, hourly pay and tax estimates.
• InvestingReturns, dividends, property and growth math.
• BusinessMargins, pricing, sellers and marketing.
• Home and buildingConcrete, paint, flooring, roofing and more.
• TradesElectrical, plumbing, HVAC and shop math.
• HealthBMI, calories, water and everyday numbers.
• FitnessRunning pace, lifting and training math.
• PetsPet age, food amounts and tank sizes.
• KitchenBaking, coffee, roasts and party food.
• GardenSoil, seed, spacing and watering.
• CraftsSewing, knitting, resin and woodwork.
• Photo, video and musicExposure, file sizes, tempo and print sizes.
• Cars and travelFuel, tires, trips and running costs.
• Outdoors and sportsHiking, boats, golf, scores and more.
• SchoolGrades, GPA and study planning.
• MathAlgebra, geometry, statistics and more.
• SciencePhysics, chemistry, electronics and the sky.
• ComputersNetworks, storage, code and web math.
• EverydaySizes, events, energy and useful odds and ends.